Back home from holiday so first day since the MOT I have had a chance to
      check her out.  The pleasure of getting through the MOT was
      tempered a  bit by the fact she overheated again on the way back
      home.   So first thing to do was check that.   
Soon found out why
      she overheated, she took 4 ltrs of water/antifreeze to fill up :-) My overflow bottle
      was also full of water.   So I emptied that back into the
      expansion bottle and then took her on a 20 mile run out to see what happened.   She behaved herself but the
      temperature profile didn't seem to be 100% right.   Back home I
      checked and the overflow bottle had some water in again.   Now she
      shouldn't be overflowing at those temperatures so the first
      suspect has to be the pressure cap on the expansion bottle.   So
      compliments of Amazon overnight, got a new cap this morning and
      fitted it.   Now need to see how she goes on the next trip. 
 
 
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